L293B Datasheet | STMicroelectronics

DESCRIPTION The L293B and L293E are quad push-pull drivers capable of delivering output currents to 1A per channel. Each channel is controlled by a TTLpatible logic input and each pair of drivers (a full bridge) is equipped with an inhibit input which turns off all four transistors. A separate supply input is provided for the logic so that it may be run off a lower voltage to reduce dissipation. Additionally, the L293E has external connection of PIN CONNECTION (Top view) DIP16 POWERDIP(16+2+2) ORDERING NUMBERS: L293E sensing resistors, for switchmode control. The L293B and L293E are package in 16 and 20pin plastic DIPs respectively ; both use the four center pins to conduct heat to the printed circuit board. DIP16 - L293B POWERDIP (16+2+2) - L293E July 2003 1/12 L293E L293B BLOCK DIAGRAMS DIP16 - L293B POWERDIP (16+2+2) - L293E 2/12 SCHEMATIC DIAGRAM L293E L293B (- ) In the L293 these points are not externally available. They are internally connected to the ground (substrate). O Pins of L293 () Pins of L293E. ABSOLUTE MAXIMUM RATINGS Symbol Vs Vss Vi Vinh Iout Ptot Tstg, Tj Parameter Supply Voltage Logic Supply Voltage Input Voltage Inhibit Voltage Peak Output Current (non repetitive t = 5ms) Total Power Dissipation at Tground-pins = 80°C Storage and Junction Temperature Value 36 36 7 7 2 5 - 40 to +150 Unit V V V V A W o C 3/12 L293E L293B THERMAL DATA Symbol Rth j-case Rth j-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max....